Problem understanding Paths Post: 302646945

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Top Forums UNIX for Dummies Questions & Answers Problem understanding Paths Post 302646945 by Chasman78 on Saturday 26th of May 2012 02:40:42 PM

05-26-2012

Registered User

I forgot to mention that I get this error message after entering ./inpath echo at the command line:

./inpath: line 48: checkforCmdInPath: command not found

---------- Post updated at 02:38 PM ---------- Previous update was at 02:37 PM ----------

Sorry, I meant that I had already done those two things before even writing this post.

---------- Post updated at 02:40 PM ---------- Previous update was at 02:38 PM ----------

Here's my actual code (I'm embarrassed I didn't think to just cut and paste like normal):

Code:

#!/bin/sh
# inpath - Verifies that a specified program is either valid as is, 
# or that it can be found in the PATH directory list.

in_path()
{
	# Given a command and the PATH, try to find the command.  Returns
	# 0 if found and executable, 1 if not.  Note that this temporarily modifies 
	# the IFS (input field separator) but restores it upon completion.

	cmd=$1		path=$2		retval=1
	oldIFS=$IFS	IFS=":"

	for directory in $path
	do
		if [ -x $directory/$cmd ] ; then
		retval=0   # if we're here, we found $cmd in $directory
		fi
	done
	IFS=$oldIFS
	return $retval
}

checkForCmdInPath()
{
	var=$1
	# The variable slicing notation in the following conditional
	# needs some explanation: ${var#expr} returns everything after
	# the math for 'expr' in the variable value (if any), and 
	# ${var%espr} returns everything that doesn't match (in this
	# case, just the very first character.  You can also do this in
	# Bash with ${var:0:1}, and you could use cut too: cut -c1.

	if [ "$var" != "" ] ; then
		if [ "${var%${var#?}}" = "/" ] ; then
			if [ ! -x $var ] ; then
				return 1
			fi
		elif ! in_path $var $PATH ; then
			return 2
		fi
	fi
}
	if [ $# -ne 1 ] ; then
		echo "Usage: $0 comand" >&2 ; exit 1
	fi

	checkforCmdInPath "$1"
	case $? in
		0) echo "$1 found in PATH"	;;
		1) echo "$1 not found or not executable"	;;
		2) echo "$1 not found in PATH"	;;
	esac

	exit 0

Chasman78

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LEARN ABOUT SUSE

openipmish

openipmish(1)						 Shell interface to an IPMI system					     openipmish(1)

NAME

       openipmish - Shell interface to an IPMI system

SYNOPSIS

       openipmish [option]

DESCRIPTION

       The openipmish is a command interpreter that gives the full power of the OpenIPMI library to a user-level command language.  It is designed
       so it can easily be driven with a scripting language like TCL, it has well-formed output.

       openipmish starts up with no connections or anything of that nature.  You must enter commands to make connections to domains.

OPTIONS

       --dmsg Turn on message debugging, this will dump all messages to debug log output.

       --drawmsg
	      Turn on raw message debugging, this will dump all low-level messages to debug log output.  This differes from normal message  debug-
	      ging in that all protocol messages are also dumped, not just IPMI messages.

       --dmem Turn  on	memory debugging, this will cause memory allocation and deallocations to be checked.  When the program terminates, it will
	      dump all memory that was not properly freed (leaked).

       --dlock
	      Turn on lock debugging, this will check lock operations to make sure that locks are help in all the proper places and make sure that
	      locks are properly nested.

       --snmp Enable the SNMP trap handler.  openipmish must be compiled with SNMP code enabled for this option to be available.

       --help Help output

COMMANDS

       openipmish  follows  the  standard  command syntax defined in ipmi_cmdlang(7).  See that for the details on most commands.  The IPMI manual
       that comes with OpenIPMI will also be quite handy.

       openipmish defines some commands that are not in the standard command language.	These are:

       read   Read and execute commands from the given file.

       exit   Quit

       redisp_cmd on|off
	      Normally, openipmish redisplays the command line when an event comes in.	This is nice for interactive use, but bad  for	scripting.
	      This lets you turn that function on and off.

SEE ALSO

       ipmi_cmdlang(7), ipmi_ui(1)

KNOWN PROBLEMS

       None

AUTHOR

       Corey Minyard <cminyard@mvista.org>

OpenIPMI							     05/13/03							     openipmish(1)